outsourcing jobs to countries with cheap labor and using technology to replace factory workers. >> increasingly, manufacturing is going to be a matter of computer programming, software and robots. >> reporter: that's why experts say math and science degrees are golden these days. and that stock is only going up. diane, the people we spoke to today say they've learned to take nothing for granted. all the traders we spoke to mentioned three things they are watching. the chinese economy, the european recession and, most of all, that grid lock in washington. >> all right, linzie, thanks so much. and a reminder, the unemployment report does come out this friday, a brand new one. >>> and now, we turn to havoc in the heartland, from that snowmaker on the move tonight. and this is no ordinary storm. the snow is wet, heavy and dangerous. abc's alex perez is in chicago tonight in it. >> reporter: well, diane, the snow has been piling up here. we've had a mild winter, so, many thought we were in the clear until this storm. the mammoth storm is hammering the midwest tonight. in minnesota alone, more than 1